1. 与你无关 

It's none of your business/concern. 

It has nothing to do with you.

2. 一句废话都不想多说

be uninterested in dragging out the conversation

3. 如梦初醒

sth. pull sb. back to reality

4. 同道中人

a fellow enthusiast

5. （两人）棋逢对手的比赛

a head-to-head race where neither of them could pull ahead

6. 每个人都有很多面

people have plent of layers 

7. 发动机隆隆启动

The engine roared to life (= started noisily).